Abstract
In the paper presented is an idea of organic Rankine cycle (ORC) operating
with supercritical parameters and so called dry fluids. Discussed is one
of the methods of improving the effectiveness of operation of
supercritical cycle by application of internal regeneration of heat
through the use of additional heat exchanger. The main objective of
internal regenerator is to recover heat from the vapour leaving the
turbine and its transfer to the liquid phase of working fluid after the
circulation pump. In effect of application of the regenerative heat
exchanger it is possible to obtain improved effectiveness of operation of
the power plant, however, only in the case when the ORC plant is supplied
from the so called sealed heat source. In the present paper presented is
the discussion of heat sources and on the base of the case study of two
heat sources, namely the rate of heat of thermal oil from the boiler and
the rate of heat of hot air from the cooler of the clinkier from the
cement production line having the same initial temperature of 260 oC,
presented is the influence of the heat source on the justification of
application of internal regeneration. In the paper presented are the
calculations for the supercritical ORC power plant with R365mfc as a
working fluid, accomplished has been exergy changes and exergy efficiency
analysis with the view to select the most appropriate parameters of
operation of the power plant for given parameters of the heat source.
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Authors and Affiliations
Aleksandra Borsukiewicz-Gozdur